<template>
  <div>
   <!-- 面包屑导航区 -->
   <el-breadcrumb separator="/">
     <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
     <el-breadcrumb-item>角色管理</el-breadcrumb-item>
     <el-breadcrumb-item>角色列表</el-breadcrumb-item>
   </el-breadcrumb>
   <el-card>
     <el-row>
       <el-col>
         <el-button type="primary" @click="addDialogVisible = true">添加角色</el-button>
       </el-col>
     </el-row>
     <el-table :data="rolesList" border stripe>
       <!-- 展开列 -->
       <el-table-column type="expand">
         <template slot-scope="scope">
           <el-row v-for="(item1,i1) in scope.row.children" :key="item1.id" :class="['bdbottom', i1 === 0? 'bdtop':'','vcenter']">
             <el-col :span="5">
               <el-tag closable @close="removeRightById(scope.row,item1.id)">{{item1.authName}}</el-tag>
               <i class="el-icon-caret-right"></i>
             </el-col>
             <el-col :span="19">
               <el-row v-for="(item2,i2) in item1.children" :key="item2.id" :class="[i2===0?'':'bdtop','vcenter']">
                 <el-col :span="6">
                   <el-tag type="success" closable @close="removeRightById(scope.row,item2.id)">{{item2.authName}}</el-tag>
                   <i class="el-icon-caret-right"></i>
                 </el-col>
                 <el-col :span="18">
                    <el-tag type="warning" v-for="item3 in item2.children" :key="item3.id" closable
                    @close="removeRightById(scope.row,item3.id)">{{item3.authName}}</el-tag>
                 </el-col>
               </el-row>
             </el-col>
           </el-row>
         </template>
       </el-table-column>
      <el-table-column type="index" label="#"></el-table-column>
       <el-table-column label="角色名称" prop="roleName"></el-table-column>
       <el-table-column label="角色描述" prop="roleDesc"></el-table-column>
       <el-table-column label="操作" width="300px">
         <template slot-scope="scope">
           <!-- 修改按钮 -->
           <el-button type="primary" icon="el-icon-edit" size="mini" @click="showEditDialog(scope.row.id)">编辑</el-button>
           <!-- 删除按钮 -->
           <el-button type="danger" icon="el-icon-delete" size="mini" @click="removeRoleById(scope.row.id)">删除</el-button>
           <!-- 分配角色按钮 -->
           <el-tooltip  effect="dark" content="分配角色" placement="top" :enterable="false">
             <el-button type="warning" icon="el-icon-setting" size="mini" @click="showSetRightDialog(scope.row)">分配权限</el-button>
           </el-tooltip>
         </template>
       </el-table-column>
     </el-table>
   </el-card>
   <el-dialog title="添加角色" :visible.sync="addDialogVisible" width="50%" @close="addDialogClosed">
     <!-- 底部区域 -->
     <el-form :model="addForm" ref="addFormRef" label-width="70px">
       <el-form-item label="角色名称" prop="roleName">
         <el-input v-model="addForm.roleName"></el-input>
       </el-form-item>
       <el-form-item label="角色描述" prop="roleDesc">
         <el-input v-model="addForm.roleDesc"></el-input>
       </el-form-item>
     </el-form>
     <span slot="footer" class="dialog-footer">
       <el-button @click="addDialogVisible = false">取 消</el-button>
       <el-button type="primary" @click="addRole">确 定</el-button>
     </span>
   </el-dialog>
   <el-dialog title="修改角色信息" :visible.sync="editDialogVisible" width="50%" @close="editDialogClosed">
     <el-form :model="editForm"  ref="editFormRef" label-width="70px">
       <el-form-item label="角色名称">
         <el-input v-model="editForm.roleName"></el-input>
       </el-form-item>
       <el-form-item label="角色描述">
         <el-input v-model="editForm.roleDesc"></el-input>
       </el-form-item>
     </el-form>
     <span slot="footer" class="dialog-footer">
       <el-button @click="editDialogVisible = false">取 消</el-button>
       <el-button type="primary" @click="editRoleInfo">确 定</el-button>
     </span>
   </el-dialog>
   <el-dialog title="分配权限" :visible.sync="setRightDialogVisible"
   width="50%" @close="setRightDialogClosed">
     <el-tree :data="rightsList" :props="treeProps" default-expand-all show-checkbox node-key="id"
      :default-checked-keys="defKeys" ref="treeRef"></el-tree>
     <span slot="footer" class="dialog-footer">
       <el-button @click="setRightDialogVisible = false">取 消</el-button>
       <el-button type="primary" @click="allotRights">确 定</el-button>
     </span>
   </el-dialog>
  </div>
</template>

<script>
export default {
  data () {
    return {
      rolesList: [],
      addDialogVisible: false,
      editDialogVisible: false,
      addForm: {
        roleName: '',
        roleDesc: ''
      },
      editForm: '',
      setRightDialogVisible: false,
      rightsList: '',
      treeProps: {
        children: 'children',
        label: 'authName'
      },
      defKeys: [],
      roleId: ''
    }
  },
  created () {
    this.getRolesList()
  },
  methods: {
    async getRolesList () {
      const { data: res } = await this.$http.get('/roles')
      if (res.meta.status !== 200) {
        return this.$message.error('获取角色列表失败')
      }
      this.rolesList = res.data
      // console.log(this.rolesList)
    },
    // 点击按钮添加新用户
    addRole () {
      this.$refs.addFormRef.validate(async valid => {
        // console.log(valid)
        if (!valid) return {}
        // 可以发起网络请求添加用户
        const { data: res } = await this.$http.post('roles', this.addForm)
        if (res.meta.status !== 201) {
          this.$message.error('添加角色失败！')
        }
        this.$message.success('添加角色成功！')
        // 隐藏添加用户对话框
        this.addDialogVisible = false
        // 重新获取用户列表数据
        this.getRolesList()
      })
    },
    addDialogClosed () {
      this.$refs.addFormRef.resetFields()
    },
    // 展示用户修改对话框
    async showEditDialog (id) {
      // console.log(id)
      const { data: res } = await this.$http.get('roles/' + id)
      if (res.meta.status !== 200) {
        return this.$message.error('查询用户信息失败')
      }
      this.editForm = res.data
      this.editDialogVisible = true
    },
    editDialogClosed () {
      this.$refs.editFormRef.resetFields()
    },
    editRoleInfo () {
      this.$refs.editFormRef.validate(async valid => {
        // console.log(valid)
        if (!valid) return {}
        // 发起修改用户信息的请求
        // console.log(this.editForm)
        const { data: res } = await this.$http.put('/roles/' + this.editForm.roleId, { roleName: this.editForm.roleName, roleDesc: this.editForm.roleDesc })
        if (res.meta.status !== 200) {
          return this.$message.error('更新角色失败!')
        }
        // 关闭对话框
        this.editDialogVisible = false
        // 刷新数据列表
        this.getRolesList()
        // 提示修改成功
        this.$message.success('更新角色信息成功')
      })
    },
    async removeRoleById (id) {
      // console.log(id)
      // 弹框询问用户是否删除用户信息
      const confirmResult = await this.$confirm('此操作将永久删除该用户, 是否继续?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).catch(err => err)
      // 如果用户点击确认删除 返回字符串confirm
      // 点击取消返回字符串cancel
      if (confirmResult !== 'confirm') {
        return this.$message.info('已经取消删除')
      }
      const { data: res } = await this.$http.delete('roles/' + id)
      if (res.meta.status !== 200) return this.$message.error('删除角色失败')
      this.$message.success('删除角色成功')
      this.getRolesList()
    },
    async removeRightById (role, rightId) {
      const confirmResult = await this.$confirm('此操作将永久删除该文件, 是否继续?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).catch(err => err)
      if (confirmResult !== 'confirm') {
        return this.$message.info('取消了删除！')
      }
      const { data: res } = await this.$http.delete(`roles/${role.id}/rights/${rightId}`)
      if (res.meta.status !== 200) {
        return this.$message.error('删除角色的权限失败!')
      }
      role.children = res.data
      return this.$message.success('删除角色的权限成功!')
    },
    async showSetRightDialog (role) {
      this.roleId = role.id
      const { data: res } = await this.$http.get('rights/tree')
      this.rightsList = res.data
      // console.log(role)
      this.getLeafKeys(role, this.defKeys)
      this.setRightDialogVisible = true
    },
    getLeafKeys (node, arr) {
      if (!node.children) {
        return arr.push(node.id)
      }
      node.children.forEach(item =>
        this.getLeafKeys(item, arr))
    },
    setRightDialogClosed () {
      this.defKeys = []
    },
    async allotRights () {
      const keys = [
        ...this.$refs.treeRef.getCheckedKeys(),
        ...this.$refs.treeRef.getHalfCheckedKeys()
      ]
      const idStr = keys.join(',')
      const { data: res } = await this.$http.post(`roles/${this.roleId}/rights`, { rids: idStr })
      if (res.meta.status !== 200) {
        return this.$message.error('分配权限列表失败')
      }
      this.$message.success('分配权限成功')
      this.getRolesList()
      this.setRightDialogVisible = false
    }
  }
}
</script>

<style lang="less" scoped>
.el-tag{
  margin:7px;
}
.bdbottom{
  border-bottom: 1px solid #eee;
}
.bdtop{
  border-top: 1px solid #eee;
}
.vcenter{
  display: flex;
  align-items: center;
}
</style>
